int.java

来自「JAVA在编译原理上的应用。」· Java 代码 · 共 28 行

package lolo.scans;

/** A class to scan for integer numbers. 
 *
 * @author <a href="http://www.inf.uos.de/bernd" target="_blank">Bernd K&uuml;hl</a>
           (<a href="mailto:[e-mail]">[e-mail]</a>)
 */
public class Int extends SetMN {
    /** Constructs a recognizer which scans one ore more digits as symbol. */
    public Int() {
        this(Integer.MAX_VALUE);
    }
    /** Constructs a recognizer which scans one or up to <tt>maxDigits</tt> digits as symbol.
     *
     * @param maxDigits the maximal number if digits per symbol.
     */
    public Int(int maxDigits) {
        super("0123456789", true, 1, maxDigits);
    }
    /** Returns a string representation of the object.
     *
     * @return a string representation of the object.
     */
    public String toString() {
        return getClass().getName()+"[maxDigits "+n+"]";
    }
}